Daily Killer Sudoku for May 25

Number 5540, Moderate - SOLUTION

by Andrew Stuart.

1 2 3 4 5 6 7 8 9
A
B
C
D
E
F
G
H
J
5
8
1
7
6
4
9
3
2
4
9
2
8
1
3
5
6
7
3
7
6
5
9
2
4
1
8
7
6
9
3
2
5
1
8
4
2
1
3
6
4
8
7
5
9
8
4
5
9
7
1
3
2
6
9
2
7
1
3
6
8
4
5
1
5
4
2
8
7
6
9
3
6
3
8
4
5
9
2
7
1